An easy to use WAV reader and writer for Java, which
supports most of the common PCM bit depth and channel
combinations. There's also a simple 4-bit ADPCM codec
based on IMA-ADPCM with an improved predictor.
IMA ADPCM is an extremely simple audio compression
algorithm that achieves pretty good sound quality at
4-bits per sample (352kbps for 44100khz CD audio).
It was used in a lot of games up until the year 2000.
Full source is included, and it has a straight-forward
API. Maybe someone will find it useful for something!
You can get the latest version from http://code.google.com/p/wavtools